Typo
This commit is contained in:
@@ -260,7 +260,7 @@ Our objective is to assess the perceived realism, coherence and roughness of the
|
|||||||
\bigskip
|
\bigskip
|
||||||
|
|
||||||
In \partref{manipulation}, we describe our contributions to the second axis of research, improving direct hand manipulation of \VOs with visuo-haptic augmentations of the hand.
|
In \partref{manipulation}, we describe our contributions to the second axis of research, improving direct hand manipulation of \VOs with visuo-haptic augmentations of the hand.
|
||||||
We evaluate how the visual and haptic augmentation of the hand can such manipulations.
|
We evaluate how the visual and haptic augmentation, and their combination, of the hand as feedback of direct manipulation with \VOs can improve such manipulations.
|
||||||
|
|
||||||
In \chapref{visual_hand}, we explore in a user study the effect of six visual hand augmentations that provide contact feedback with the \VO, as a set of the most popular hand renderings in the \AR literature.
|
In \chapref{visual_hand}, we explore in a user study the effect of six visual hand augmentations that provide contact feedback with the \VO, as a set of the most popular hand renderings in the \AR literature.
|
||||||
Using the \OST-\AR headset Microsoft HoloLens~2, the user performance and experience are evaluated in two representative manipulation tasks, \ie push-and-slide and grasp-and-place of a \VO directly with the hand.
|
Using the \OST-\AR headset Microsoft HoloLens~2, the user performance and experience are evaluated in two representative manipulation tasks, \ie push-and-slide and grasp-and-place of a \VO directly with the hand.
|
||||||
|
|||||||
@@ -3,7 +3,7 @@
|
|||||||
|
|
||||||
\begin{subfigs}{setup}{User Study. }[][
|
\begin{subfigs}{setup}{User Study. }[][
|
||||||
\item The nine visuo-haptic textures used in the user study, selected from the HaTT database \cite{culbertson2014one}.
|
\item The nine visuo-haptic textures used in the user study, selected from the HaTT database \cite{culbertson2014one}.
|
||||||
The texture names were never shown, so as to prevent the use of the user's visual or haptic memory of the textures.
|
The texture names were never shown, to prevent the use of the user's visual or haptic memory of the textures.
|
||||||
\item Experimental setup.
|
\item Experimental setup.
|
||||||
Participant sat in front of the tangible surfaces, which were augmented with visual textures displayed by the HoloLens~2 \AR headset and haptic roughness textures rendered by the vibrotactile haptic device placed on the middle index phalanx.
|
Participant sat in front of the tangible surfaces, which were augmented with visual textures displayed by the HoloLens~2 \AR headset and haptic roughness textures rendered by the vibrotactile haptic device placed on the middle index phalanx.
|
||||||
A webcam above the surfaces tracked the finger movements.
|
A webcam above the surfaces tracked the finger movements.
|
||||||
@@ -87,7 +87,7 @@ The placement of the haptic textures was randomized before each trial.
|
|||||||
%
|
%
|
||||||
Participants were instructed to look closely at the details of the visual textures and explore the haptic textures with a constant pressure and various speeds to find the haptic texture that best matched the visual texture, \ie choose the surface with the most coherent visual-haptic texture pair.
|
Participants were instructed to look closely at the details of the visual textures and explore the haptic textures with a constant pressure and various speeds to find the haptic texture that best matched the visual texture, \ie choose the surface with the most coherent visual-haptic texture pair.
|
||||||
%
|
%
|
||||||
The texture names were never given or shown to prevent the use of visual or haptic memory of the textures, nor a definition of what roughness is was given, so as to let participants complete the task as naturally as possible, similarly to Bergmann Tiest \etal \cite{bergmanntiest2007haptic}.
|
The texture names were never given or shown to prevent the use of visual or haptic memory of the textures, nor a definition of what roughness is was given, to let participants complete the task as naturally as possible, similarly to Bergmann Tiest \etal \cite{bergmanntiest2007haptic}.
|
||||||
|
|
||||||
Then, participants performed the \emph{ranking task}, employing the same setup as the matching task and the same 9 textures.
|
Then, participants performed the \emph{ranking task}, employing the same setup as the matching task and the same 9 textures.
|
||||||
%
|
%
|
||||||
|
|||||||
@@ -153,15 +153,15 @@ A total of 3 visual renderings \x 6 amplitude differences \x 2 texture presentat
|
|||||||
\subsection{Collected Data}
|
\subsection{Collected Data}
|
||||||
\label{collected_data}
|
\label{collected_data}
|
||||||
|
|
||||||
For each trial, the \textit{Texture Choice} by the participant as the roughest of the pair was recorded.
|
For each trial, the \response{Texture Choice} by the participant as the roughest of the pair was recorded.
|
||||||
%
|
%
|
||||||
The \textit{Response Time} between the end of the trial and the choice of the participant was also measured as an indicator of the difficulty of the task.
|
The \response{Response Time} between the end of the trial and the choice of the participant was also measured as an indicator of the difficulty of the task.
|
||||||
%
|
%
|
||||||
At each frame the \textit{Finger Position} and \textit{Finger Speed} were recorded to control for possible differences in texture exploration behaviour.
|
At each frame the \response{Finger Position} and \response{Finger Speed} were recorded to control for possible differences in texture exploration behaviour.
|
||||||
%
|
%
|
||||||
After each \factor{Visual Rendering} block of trials, participants rated their experience with the vibrotactile textures (all blocks), the vibrotactile device (all blocks), the virtual hand rendering (all except \level{Mixed} block) and the virtual environment (\level{Virtual} block) using the questions shown in \tabref{questions}.
|
After each \factor{Visual Rendering} block of trials, participants rated their experience with the vibrotactile textures (all blocks), the vibrotactile device (all blocks), the virtual hand rendering (all except \level{Mixed} block) and the virtual environment (\level{Virtual} block) using the questions shown in \tabref{questions}.
|
||||||
%
|
%
|
||||||
%They also assessed their workload with the NASA Task Load Index (\textit{NASA-TLX}) questionnaire after each blocks of trials.
|
%They also assessed their workload with the NASA Task Load Index (\response{NASA-TLX}) questionnaire after each blocks of trials.
|
||||||
%
|
%
|
||||||
For all questions, participants were shown only labels (\eg \enquote{Not at all} or \enquote{Extremely}) and not the actual scale values (\eg 1 or 5), following the recommendations of \textcite{muller2014survey}.
|
For all questions, participants were shown only labels (\eg \enquote{Not at all} or \enquote{Extremely}) and not the actual scale values (\eg 1 or 5), following the recommendations of \textcite{muller2014survey}.
|
||||||
|
|
||||||
|
|||||||
@@ -1,5 +1,5 @@
|
|||||||
\chapter{List of Publications}
|
\chapter{List of Publications}
|
||||||
\label{ch:publications}
|
\mainlabel{publications}
|
||||||
|
|
||||||
\section*{Journals}
|
\section*{Journals}
|
||||||
|
|
||||||
|
|||||||
Reference in New Issue
Block a user